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The application must be "Run as Administrator," and in some cases, "Compatibility Mode" for Windows XP (Service Pack 3) must be enabled. Verification Note
| Problem | Symptom | Solution | | :--- | :--- | :--- | | | "No phone connected" | Reinstall drivers in Test Mode. Use a different USB 2.0 port (not 3.0). Try the "Dead USB" mode: remove battery, hold power button, then connect cable. | | IMEI Tab is grayed out | BB5 security | NSS cannot change IMEI on BB5 phones without a hardware dongle (JAF/BEST). This is normal. v103815 "works" but not for that feature. | | Crashes on Windows 11 | Access violation error | Disable Windows Defender Real-time protection temporarily. Run NSS.exe as Administrator + Windows 7 compat. | | Cannot write product code | "Write failed" | The phone's flash must be in "Local" mode. Use Nokia PC Suite to restore connectivity first, then try NSS. | | SIM lock remains | SL3 phone | v103815 cannot fully unlock SL3 (e.g., Nokia X6, N8). You need a paid BB5 unlock service. NSS v103815 "works" only for older BB5 and DCT4 phones. | nemesis service suite nss v103815 download work
: While it added support for Windows 7, it is an older tool and may require Compatibility Mode (e.g., set to Windows XP or 7) to run correctly on modern versions of Windows like 10 or 11. The application must be "Run as Administrator," and